This worked splendidly. Thanks so much!I have been having the same problem, and recently, I had iTunes and Terminal both open at the same time, so I figured I'd save myself the hassle of re-closing iTunes when it inevitably would open again, and I just typed:
This, of course, worked, because it doesn't go through to normal quit scripts. However, when I opened up iTunes again, and then quit it, it stayed quit... and the next time... and the next time. It seems that all you have to do is open iTunes, open Terminal, run the command "killall iTunes", and you're home free!